Keimei Plastifizierung Technik GmbH
Press Release
KEIMEI at K2013:Advanced Extrusion Technology Boosts Efficiency in Polymer Processing and Compounding /
Hall 06 / D76
German Utility Model No.:20 2013 102 627.1 – Applicated German Patent No.:10 2013 106 337.3
KEIMEI’s triple and twin screw extruders, newly introduced at K2013, use a three-start-design for the shearing and conveying screw shaft elements to boost these systems’ efficiency in plasticizing, mixing and compounding of polymer blends.
Photo: © KEIMEI
Advanced Extrusion Technology Boosts Efficiency in Polymer Processing and Compounding /
Hall 06 / D76
Applicated German Utility Model No.: 20 2013 104 512.8
KEIMEI’s twin-screw blend reactors, newly introduced at K2013, available as tailor made two- or multiple-stage systems, are suitable for challenging tasks such as reactive extrusion, polymer grafting, the production of polymer-based nanocomposites or the degradation of polymers to produce waxes.
Photo: © KEIMEI
Advanced Extrusion Technology Boosts Efficiency in Polymer Processing and Compounding /
Hall 06 / D76
Düsseldorf/Germany, October 2013
At K2013, KEIMEI Plastifizierung Technik GmbH (www.keimei.de) will introduce their range of high efficiency triple and twin screw extruders as well as their versatile system of blend reactors for challenging applications. These systems are all equipped with a unique tree-start screw design, which provides an optimized balance between plasticizing effect, output and energy consumption. Compared to conventional two-start screw designs, the input of shearing energy into the processed polymer materials is 50% higher per revolution of the screw, significantly boosting the mixing and shearing efficiency. All KEIMEI extruder systems are available in two basic sizes with screw diameters of 52,9 or 66,5mm respectively and L/D ratios from 30 to 60 (20 to 60 for the triple screw type).
KEIMEI’s innovative triple screw extruder design provides specific advantages. Not only are the processed materials sheared three times per screw revolution, the trefoil formation also provides three cutting points between these three screws in the barrel, compared to only one in a conventional twin screw extruder. In-house tests prove that, thanks to the combined effects of three-start screw and the use of the triple screw design, the L/D ratio of these KEIMEI systems can be reduced to only one third of that required for a comparable standard twin screw extruder design to achieve the same plasticizing effect. Hence, also the retention time of the material inside the barrel is just one third, which makes KEIMEI triple screw extruders an unmatched choice for the processing of heat sensitive polymer materials. Beyond this, these versatile systems are particularly advantageous for polymer blending and grafting, compounding and dispersing of powder and polymer additives, and also for the continuous mastication of rubber.
The range of KEIMEI blend reactors is as diversified as the materials and tasks they are used for. Basically, they are all built up by a series of twin screw extruders and their related control devices, with the number of extruders determined according to the requirement. Increasing the efficiency of a twin screw reactive extruder commonly involves higher L/D ratios, which in turn require higher input torque to meet the specified revolution speed. This approach is limited by the torsional strength of the screw core shaft. The cascaded design of KEIMEI multiple stage blend reactors overcomes this constraint, as the individual systems can be kept short and at the same time highly efficient, making the total achievable L/D ratio virtually unlimited. The typical applications of these tailor made systems range from polymer synthesis reactions and the physical processing of special polymers, such as the preparation of polymer-based nano-composite materials, to the dissolution of polymers in ionic solvents as well as in critical gases, to polymer degradation reactions, etc.
KEIMEI Plastifizierung Technik GmbH of Düsseldorf/Germany, develops and manufactures high-quality polymer extruders and fiber spinning lab equipments. Its world-class interdisciplinary R&D team is in close cooperation with universities in Europe, USA and Asia, focusing on the plasticizing of polymeric materials.
Further information:
KEIMEI Plastifizierung Technik GmbH
Sternstr. 67, 40479 Düsseldorf / Germany
Phone: +49 (0) 2 11 16 45 93 60, telefax: +49 (0) 2 11 16 45 93 59
http://www.keimei.de,
Editorial contact and voucher copies:
Dr. Jörg Wolters, Konsens PR GmbH & Co. KG
Hans-Kudlich-Straße 25, D-64823 Groß-Umstadt / Germany
Phone: +49 (0) 60 78/93 63-0, telefax: -20
E-mail:
The German and English text of this press release in *.doc format, as
well as the illustrations in print-quality resolution, are available for download at:
www.konsens.de/kunststoffland_nrw.html
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